Question

Block mass = m 0° h HS, b Determine the minimum force required (N) required to slide the block. The following data apply: m = 55 kg. b = 2.0 m, h = 1.6 m, 0 = 34 deg, us = 0.28, and uk = 0.22.

Answer 1

AN Block mass=m Р Q-> > Pcoso mg Ms, Mr MN Xpsino mg Given data =) m= 55 55 kg Ms=0:28 fig (in b = 210 m Mx = 0:22 h = 1.6m > b fig (i Q = 34 solutions N = psimo+mg (sig Cijs 2 ing) - Cin So for = Mg N = Ms (Psimot So for sliding (just start to slide so min P) Psimot mg) ces mg - P coso > Mg N Plosoa Msl pos= Ms (Psimoting) Р Ms 0.28X55 X 9.81 Caso - Mşsin o) i (69534*-0.2888M24") P=224.657 N G So min value Maulmaf minima for Fimin Cosot using y = caso + Masino, so gidy = -sinot using y" -Coso - Algamo = -(Coso + Mg sim oko at O=tant(M) 8-тат на foss 0€ 6,964) श du man M2 + = VH2 +4² 14:42

In equation (ii) M mg 0-28 X55X9.81 = milm VI+42 2 1 +0.28 min = 140.09 N

So the minimum force required in 140.09 N.

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